SB2011090302 - Multiple vulnerabilities in Fuse

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Main Vulnerability Database SB2011090302

SB2011090302 - Multiple vulnerabilities in Fuse

Published: September 3, 2011 Updated: August 11, 2020

Security Bulletin ID SB2011090302
Severity
Medium
Patch available
YES
Number of vulnerabilities 3
Exploitation vector Remote access
Highest impact Data manipulation

Breakdown by Severity

Medium 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 3 secuirty vulnerabilities.


1) Link following (CVE-ID: CVE-2011-0541)

The vulnerability allows a remote non-authenticated attacker to manipulate or delete data.

fuse 2.8.5 and earlier does not properly handle when /etc/mtab cannot be updated, which allows local users to unmount arbitrary directories via a symlink attack.


2) Permissions, Privileges, and Access Controls (CVE-ID: CVE-2011-0542)

The vulnerability allows a remote non-authenticated attacker to manipulate or delete data.

fusermount in fuse 2.8.5 and earlier does not perform a chdir to / before performing a mount or umount, which allows local users to unmount arbitrary directories via unspecified vectors.


3) Permissions, Privileges, and Access Controls (CVE-ID: CVE-2011-0543)

The vulnerability allows a remote non-authenticated attacker to manipulate or delete data.

Certain legacy functionality in fusermount in fuse 2.8.5 and earlier, when util-linux does not support the --no-canonicalize option, allows local users to bypass intended access restrictions and unmount arbitrary directories via a symlink attack.


Remediation

Install update from vendor's website.

References